chevy 2000 ls blazer 02 sensors on 2000 Chevrolet Blazer

i have an 200 chevy blazer ls and wanted to puchase 02 sensors. how many o2 sensors does an blazer have. and if possible their locations. will try to change myself to save some doe. so far i located on underneath the car on the drivers side

Asked by for the 2000 Chevrolet Blazer
Your 2000 Chevrolet Blazer has 3 O2 sensors. One one each bank before the catalytic converter and one behind the catalytic converter. Some sensors can be hard to get to, you will need to have a look and see if you think you can handle the job.
thank you. i ordered the sensors and gonna have them installed in the shop. i do not have a jack. and don't think i can fit underneath with out one
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